Wi l l i am hamilton



' Letters Patent' No. 79,343, dated June- 30, `1868.

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i T0 ALL WHOM IT MAY CONCERN t Be it VInown that I, Winni! HAMILTON, of. Ghicopee, Hampden county, Gommonwealthot li'ias'snchu'setts,` blue-invented a new and useful Improved Hose-Coupling; und I do hereby declare thut'the `following is afull and clear description thereof, reference being had to the accompanying drav'vings, and to'the letters of reference nnnrlredthereon..l i

lathe drawingsf- Figure 1 is a plan view ot one of the parte, Figure 2 a side view -of the whole, and' Figure '3 a' detailed view of-rsyinvention, This invention consistsef a nevi. and. improved arrangement for irreversible-lock hose-coupling, and the anuncis' constructed :1s-follows: i i l l Euch part of my coupling' is formed alike', sat/'that :n jointeunjnvnde with anyftwojisrt's, anden' each part is a bevelled rim, A, around tlie'fi'ren'tV outer edgeg' and upon one side of each4 part ofr the coupling this rim' ils 'turnedf'ovexnto a'lip, B, the inner concave side of which corresponds to the rim A onathe otherpa'rt. i

`'When thetvili parts are put together, the'llpofieachditsover 'the'xin ofthe other, an-dthu's a'loek' islinade" which prevents the possibility vof the ports being' forced asunder infthey same line; andv it only,becomes necessary toclamp the parts 'inthis position in order tocomplete the joint'. V In order to accomplish this,vI form on euch part, opposite tothe lip, and n short distance back'f the rim A, s projecting block, C, tig. 3, in which is arrungeda 'spiral slotted pin, D, having a belt-head upon ts'end at E, vthe other end' being intended to clamp upon the top`oftho lip B of the other part', und also agpinsta projection, F, lnp'ou the lip; the pin D being' outside of this projection, und thus preventing more perfectly the two-parts ofthe coupling-from being slipped apart. I

In order that the pin shall jam at its end against .the projection F, I form .it nt this part eccentricallyLto the body of the pin, so that whenI the pin is turned, the spiral slot. H, 'guided upon thepin G-,gforee'sitdown and clamps it against 'the tcp of the lip B,'and the side 'ot` the eccentric end J against the projection F, the. maximum of the eccentric being towards the projection at the time when the pin D is furthestdown. The pin ,A G, forming the guide for the slotted pin D, is put through 'the block (hand projects int-o the slotH as its guide., The operation Vof this is as follows: I n I' In putting the'part's together, the two lipsure put on opposite sides, and the rim of each s lideshnd'er the lip oi" the other. "The'pns are then turned until they-securely clamp against theilips, i l A great advantage of strengthis obtainedby the curved form of these lips, as it requires a 'much greater v strain to' break-one than would b'ev required to break a straight one of 'the same stock; consequently they .can "Y be made much lighter. l A The rest of dthe d'cvic'e is simple and perfectly reversible, so that ny tv vo parts can hejoinedat once witliout rearranging. i j i w Having described my invention, what I claixn us new, and desire to secure by Letters Pntent,`s v IThe combination of the two parts of the coupling, each having u li'p, B, and rim A, with the fastening-pinA 4D, with spiral slot H and eccentric-faced, the parts being constructedand arranged together substantially as .herein given.

Witnesses E. H. HYDE,

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WM. HAMILTON. 

